| 摘要 |
PURPOSE:To grasp easily and accurately the relationship of relative position with respect to the directions of X and Y axes by detecting the relative distance between moving bodies with respect to the direction of X and Y axes as electrical signals and making these signals correspond to display means. CONSTITUTION:The movements of main and auxiliary moving bodies are performed by the operation of X- and Y-axis driving hydraulic cylinders 3, 4, and their operating positions are detected as electrical signals by means of each potentiometer 11, 12 and inputted in a display drive circuit 13. A-D convertors 16, 17 of the circuit 13 output converted signals and decoders 18, 19 output signals SX, SY corresponding to the values based on the converted signals. Based on the signals SX, SY, signals to select the rows and lines of light emitting element groops of a display 21 are outputted, allowing the light emitting elements to emit light. When an operator operates operating switches 9, 10, the moving bodies are moved and the display 21 makes displayment based on the decoders 18, 19. |
